AKA: MODEL V121-S, AKA (Label): V121-S, Product number (P/N): V121S (V121-S),
Keywords/Tags: V121S (V121-S)
Date of intro: ~1973, Origin: Japan (List),
Power: AC,
Number of keys: 21, #Key-Black: 16, #Key-Blue: 3, #Key-Red: 2,
Decimal switch: [6-4-3-2-1-0], Round switch: [F-5/4-CUT],
Classification: / Desktop with Display,
Featuring: Procent, Square root,
Related with: CASIO_docu: (Broch.) 121S; CASIO_docu: (Instr.) 121S (Root),
Resemblance with: (Resemblance 521B),
Known Serial-numbers: 611550 | B709407 (List of all S/Ns from CASIO)
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),